function getRequest(){
	try{
		// Firefox, Opera 8.0+, Safari
		return new XMLHttpRequest();
	}
	catch (e){
		// Internet Explorer
		try{
			return new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e){
			try{
				return new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e){
				alert("Your browser does not support AJAX!");
				return false;
			}
		}
	}
}

function showContent(content){
	xmlHttp = getRequest();
	xmlHttp.onreadystatechange=function(){
		if(xmlHttp.readyState==4){
			document.getElementById("content").innerHTML =xmlHttp.responseText;
		}
	}
	xmlHttp.open("GET",content,true);
	xmlHttp.send(null);
}

function showPhoto(photo,returnpage){
	document.getElementById("content").innerHTML ='<img onclick=showContent("' + returnpage + '") src=' + photo + '><br>';
}